Box for pouring steel ingots



W. D. BRADFORD.

BOX FOR POUBING STEEL lNGOTS APPLICATION FILED nc.13, 1920.

Patented Nov. 29, 1921.

2 SHEETS-SHEET 1.

Wad/Wad W. D. BRADFORD. I BOX FOR POURING-STEEL mcors.

APPLICATION FILED DEC. 13, I920- Patented Nov. 29, 1921.

2 SHEETSSHEET 2.

UNITED s'miuasv PATENT OFFICE.

WILLIAM D. BRADFORD, OI SEWICKIIEY, PENNSYLVANIA.

BOX FOR POURING STEEL INGQTS.

To aZZ whom it may concern:

Be it known that I, WILLIAM D. BRAD- I FORD, a citizen of the United States, residing at Sewickley, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Box for Pouring Steel Ingots, of which the followingis a specification.

This invention relates to boxes for pouring s'teel into molds, one of itsobjects being to provide a structure of this character whereby-two molds can be filled atone operation the flow of steel to the molds being controllable at all times so that more orslowly thu doing away with the crackin resulting form rapid pouring of the stee It is well known to -those skilled in the art that unless the ingot-s are poured slowly the cracks will be produced and this has resulted in the use to a large extent of a plate known as a bottom cast. Bottom cast ingots are much more expensive than top cast ingots but nevertheless the top cast ingots usually have a great number of surface cracks which open up when the ingot is rolled.

It is an object of the present invention to provide a pouring box whereby by reducing the flow of steel the formation of cracks is practically eliminated, the pressure of the stream as it comes from the ladle being taken up by the pouring box and said stream being split so that a portion will go to one mold and the balance to another mold, the flow being much slower than should the steel be poured directly from the ladle into the mold.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that, within the scope of what is claimed, changes in the precise embodiment of the invention shown can be made without departing from the spirit of the invention.

In the accompanyin drawing the preferred form of the invention has been shown.

Specification of Letters Patent. Patented Nov, 29, 1921 Application filed December 13, 1920. Serial 110,430,360.

' carriage adapted to travel along a supportmg track indicated at 2. This carriage has spaced arms 3 extending laterally therefrom and tiltably mounted between the arms is a pouring box such as has been illustrated in detail in Figs. 3, 4 and 5. This box includes a top plate 4 having liftin lugs .5 at the ends thereof and upstanding rom the center of this plate is a split tapered sleeve 6 in which is seated a conical funnel or fountain 7 of suitable refractory material. Secured to the top plate 4 is an elongated housing 8 having depending end portions 9 and a recessed central portion 10. In this central portion is secured a lining of firebrick or the like indicated at 11 while within the depending portions 9 are arranged nozzles 12 of refractory material. Hollow refractory blocks 13 are seated within thehousing 8 and constitute linings therefor whereby the molten steel is conducted from the central funnel 0r fountain 7 to the nozzles 12. The cement used for fastening the .blocks within the housing 8 and to the plate 4 and sleeve 6 has been indicated at 14.

Extending from the sides ofthe housing 8 at the center thereof are trunnions 15 overhung by guard plates 16 and these trunnions are supported within the sides of the arms 3 will thus receive the force of the pouring steel which steel will be divided into two streams, passing to the res ctive nozzles 12 as will be obvious. Smal jets of molten steel will thus issue from the nozzles and flow into the respective in 0t molds. Should the steel flow too rapi 1y from one of the nozzles the box can be tilted by means of the bar 17 so as to direct more of the steel to th other nozzle.

What is claimed is:

1. A closed box for pouring steel into ingot molds having spaced nozzles, an intermediate steel receiving fountain carried by and opening into the box, and covered means within the box for conducting molten steel from the fountain and within the box to the respective nozzles.

' 2. A box for pouring steel into ingot molds including a tiltably supported covered housing, nozzles extending downwardly within the end portions of the housing, an intermediate steel receiving fountain, and means for conducting streams of .molten steel from the fountain to the respective nozz es.

In testimony that I claim the fore oing as my own, I have hereto aflixed my signaturein the presence of two witnesses.

" WILLIAM D. BRADFORD.

Witnesses:

, JAMES EDWARD OULLETON, Jr.,

' WILLIAM DIcKmsoN Smnws. 

